2. All three of the parent dust bunnies also have flaky skin, which is an undesi

Question

2. All three of the parent dust bunnies also have flaky skin, which is an undesirable trait in dust bunnies. When Twinkle was mated with Thor, the following offspring phenotypes were observed:

Genotypes of Twinkle (Gg)Brown color. Thor (gg) grey color

3 flaky skin

1 normal skin

a. Which skin phenotype is dominant? 0.5 pts

b. What are the skin genotypes of Twinkle and Thor? 1 pt

What is the probability that an offspring of Twinkle and Thor will be:

c. Grey, flaky skin?

d. Brown, normal skin?

e. Brown, flaky skin?

f. Grey, normal skin? 0.5 pts each

Explanation / Answer

2.

a. Flaky skin type is dominant

b. Since the phenotype of offspring shows 3 flaky skin and 1 normal skin. The skin genotype of Twinkle and Thor must be heterozygous dominant. Twinkle (Ff) and Thor (Ff).

c. Propability that an off-spring will be Grey, flaky skin = 0.5 x 0.75 = 0.375

d. Probability that an off-spring will be Brown, normal skin = 0.5 x 0.25 = 0.125

e. probability that an off-spring will be Brownm flaky skin = 0.5 x 0.75 = 0.375

f. Probability that an off-spring will be Grey, normal skin = 0.5 x 0.25 = 0.125

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.